public string getUpdatedIntCode(string intCodeFromConsole, string inp)
{
int userInput = int.Parse(inp);
int output = 0;
List <int> instructionParams;
List <int> IntCode = getIntCode();
int nextInstructionStartPoint = 0;
string nextInstruction;
int operationCode;
while (nextInstructionStartPoint < IntCode.Count)
{
nextInstruction = getNextInstruction();
operationCode = int.Parse(nextInstruction.Substring(3, 2));
if (operationCode == 99)
{
break;
}
int digitsQnty = getNextInstructionDigitsQuantity();
instructionParams = IntCode.GetRange(nextInstructionStartPoint, digitsQnty);
nextInstructionStartPoint += digitsQnty;
int p1 = getParameterOneDependingOnMode();
int p2 = instructionParams.Count > 2 ? getParameterTwoDependingOnMode() : 0;
int p3 = instructionParams.Count > 3 ? instructionParams[3] : 0;
switch (OpCodes[operationCode - 1])
{
case "opCodeRequires__InputAtP3sumOfP1nP2":
IntCode[p3] = p1 + p2;
break;
case "opCodeRequires__InputAtP3productOfP1nP2":
IntCode[p3] = p1 * p2;
break;
case "opCodeRequires__InputAtPosition":
IntCode[instructionParams[1]] = userInput;
break;
case "opCodeRequires__DisclosingOutput":
output = IntCode[instructionParams[1]];
Console.WriteLine("output - " + output);
break;
case "opCodeRequires__JumpIf_P1isNotZero":
if (p1 > 0)
{
nextInstructionStartPoint = p2;
}
break;
case "opCodeRequires__JumpIf_P1isZero":
if (p1 == 0)
{
nextInstructionStartPoint = p2;
}
break;
case "ifP1lessThanP2storeOneElseZeroAtP3":
if (p1 < p2)
{
IntCode[p3] = 1;
}
else
{
IntCode[p3] = 0;
}
break;
case "ifP1equalsP2storeOneElseZeroAtP3":
if (p1 == p2)
{
IntCode[p3] = 1;
}
else
{
IntCode[p3] = 0;
}
break;
default:
Console.WriteLine("Something wrong !");
break;
}
}
return(output.ToString());
// local (in function) functions
List <int> getIntCode()
{
return(intCodeFromConsole.Length > 2
? intCodeFromConsole.Split(",").Select(int.Parse).ToList()
: RawData.dataForAdvent5());
}
string getNextInstruction()
{
string abcde = IntCode[nextInstructionStartPoint].ToString();
return("00000".Substring(abcde.Length) + abcde);
}
int getNextInstructionDigitsQuantity()
{
return((operationCode == 3 || operationCode == 4)
? 2 : ((operationCode == 5 || operationCode == 6)
? 3 : Math.Min(4, IntCode.Count - nextInstructionStartPoint)));
}
int getParameterOneDependingOnMode()
{
string p1mode = nextInstruction.Substring(2, 1);
return(p1mode == "1" ? instructionParams[1] : IntCode[instructionParams[1]]);
}
int getParameterTwoDependingOnMode()
{
string p2mode = nextInstruction.Substring(1, 1);
return(p2mode == "1" ? instructionParams[2] : IntCode[instructionParams[2]]);
}
}